Asphalt mixer tip and shank assembly

Claim 2

A mixer assembly for attachment to a drive shaft comprising: a. a shank comprising a hub for receiving the drive shaft to mount said shank on the drive shaft for rotation therewith, and a blade projecting radially outward from said hub, said blade having a distal end; and b. a mixer tip comprising an ear, said ear being formed with an opening extending in the general direction of said mixer tip for receiving the distal end of said blade, and means on said mixer tip urging said mixer tip in fixed relation with said blade for rotation with said shank, c. said mixer tip being formed with a recessed portion confronting said ear, said opening in said ear being a recess confronting said recessed portion, said distal ends of said blade being received by said recessed portion and said recess of said ear, said recessed portion being formed with right angular walls and said recess of said ear being defined by right angular walls and said distal end of said blade being formed with a contour conforming to the configuration of said walls.

Claim 3

A mixer tip as claimed in claim 1 and comprising a slip-on shroud mounted on said sHank, said shroud comprising a sleeve for receiving the distal end of said blade, said mixer tip being disposed radially outward of said shroud for retaining said shroud on said shank.

Claim 4

A mixer assembly as claimed in claim 1 wherein the recess of said recessed portion and said recess of said ear are complementary and define a quadrature cross-sectional area and wherein the distal end of said blade has a quadrature cross-sectional area.

Claim 5

A mixer assembly as claimed in claim 1 wherein said shank comprises a second blade projecting radially outward from said hub, said hub being separable to form detachable first and second hub halves, said blade projecting from said first hub half and said second blade projecting from said second hub half, and comprising means interengaging said first and second hub halves to urge said first and second hub halves into clamping engagement with the drive shaft for securing said shank to said drive shaft.

Claim 6

A mixer assembly as claimed in claim 4 wherein said first and second hub halves include confronting recesses defined by right angular walls for receiving the drive shaft.

Claim 7

A mixer tip comprising: a. a top wall; b. end walls extending from said top wall; c. a front wall disposed between said end walls; and d. a rear wall disposed between said end walls, said rear wall comprising an ear projecting outwardly therefrom, said ear being formed with an opening for receiving the end of a blade extending in the general direction of the mixer tip, e. said rear wall being formed with a recessed portion confronting said ear, said opening in said ear being a recess confronting said recessed portion, the end of the blade being received by said recessed portion and said recess of said ear, said recessed portion being formed with right angular walls and said recess of said ear being defined by right angular walls.

Claim 8

A mixer tip comprising: a. a top wall; b. end walls extending from said top wall; c. a front wall disposed between said end walls; and d. a rear wall disposed between said end walls, said rear wall comprising an ear projecting outwardly therefrom, said ear being formed with an opening for receiving the end of a blade extending in the general direction of the mixer tip, e. said rear wall being formed with a recessed portion confronting said ear, said opening in said ear being a recess confronting said recessed portion, the end of the blade being received by said recessed portion and said recess of said ear, said recessed portion being formed with right angular walls and said recess of said ear being defined by right angular walls.

Claim 9

A mixer tip as claimed in claim 6 and comprising means on said ear for urging the blade in fixed relation with the mixer tip.

Claim 10

A mixer tip as claimed in claim 7 wherein said means is a pin of expansible material.

Claim 11

A mixer tip as claimed in claim 7 wherein the recess of said recessed portion and said recess of said ear are complementary and define a quadrature cross-sectional area.

Claim 12

A mixer assembly as claimed in claim 1 wherein said means on said mixer tip urging said mixer tip in fixed relation with said blade for rotation with said shank is a pin of expansible material.

Claim 13

A mixer assembly for attachment to a drive shaft comprising: a. a shank comprising a hub for receiving the drive shaft to mount said shank on the drive shaft for rotation therewith, and a blade projecting radially outward from said hub, said blade having a distal end; and b. a mixer tip comprising a first wall, said first wall being formed with an opening extending in the general direction of said mixer tip for receiving the distal end of said blade, and means on said mixer tip urging said mixer tip in fixed relation with said blade for rotation with said shank, c. said mixer tip being formed with a recessed portion in a second wall confronting said first wall, said opening in said first wall being a recess confronting said recessed portion in said second wall, said distal ends of said blade being received by said recessed portion of said second wall and said recess of said first wall, said recessed portion of said second wall being formed with right angular walls and said recess of said first wall being defined by right angular walls and said distal end of said blade being formed with a contour conforming to the configuration of said right angular walls.

Claim 14

A mixer assembly for attachment to a drive shaft comprising: a. a shank comprising a hub for receiving the drive shaft to mount said shank on the drive shaft for rotation therewith, and a blade projecting radially outward from said hub, said blade having a distal end; and b. a mixer tip comprising a first wall, said first wall being formed with an opening extending in the general direction of said mixer tip for receiving the distal end of said blade, and means on said mixer tip urging said mixer tip in fixed relation with said blade for rotation with said shank, c. said mixer tip being formed with a recessed portion in a second wall confronting said first wall, said opening in said first wall being a recess confronting said recessed portion in said second wall, said distal ends of said blade being received by said recessed portion of said second wall and said recess of said first wall, said recessed portion of said second wall being formed with right angular walls and said recess of said first wall being defined by right angular walls and said distal end of said blade being formed with a contour conforming to the configuration of said right angular walls.

Claim 15

A mixer tip comprising: a. a top wall; b. end walls extending from said top wall; c. a front wall disposed between said end walls; and d. a rear wall disposed between said end walls, said rear wall being formed with an opening for receiving the end of a blade extending in the general direction of the mixer tip, e. said rear wall being formed with a recessed portion confronting said opening, the end of the blade being received by said recessed portion and said opening, said recessed portion being formed with right angular walls and said opening being defined by right angular walls.

Claim 16

A mixer tip comprising: a. a top wall; b. end walls extending from said top wall; c. a front wall disposed between said end walls; and d. a rear wall disposed between said end walls, said rear wall being formed with an opening for receiving the end of a blade extending in the general direction of the mixer tip, e. said rear wall being formed with a recessed portion confronting said opening, the end of the blade being received by said recessed portion and said opening, said recessed portion being formed with right angular walls and said opening being defined by right angular walls.

Claim 17

A mixer assembly as claimed in claim 11 wherein said means on said mixer tip urging said mixer tip in fixed relation with said blade for rotation with said shank is a pin of expansible material.

Claim 18

A mixer tip as claimed in claim 13 and comprising a pin of expansible material on said rear wall for urging the blade in fixed relation with said mixer tip.

Claim 19

A mixer assembly as claimed in claim 11 wherein said means on said mixer tip urging said mixer tip in fixed relation with said blade for rotation with said shank is a pin disposed at right angles to said blade and said mixer tip.

Claim 20

A mixer tip as claimed in claim 11 and comprising a pin on said rear wall disposed at right angles to said mixer tip for urging the blade in fixed relation with said mixer tip.